You have some really nice characters here!!
Your digi skills are good, getting better, you do your studies and your colour combinations are pretty dang good as well!!
So far, i see your alien like critters to be the best example of that and i really like your painting from #339

In post #382 i saw in your wips that at some point, your 12th frame i think, to be the best, and then you overworked it a bit, loosing the confident smooth strokes, then the saturation and so on.
Give it some air at one point, perhaps flip it more, just don't try so hard to refine everything. It may look bad now, but after a few hours of looking at something else, it may look just fine.